SLANT SUBMANIFOLDS OF A RIEMANNIAN PRODUCT MANIFOLD

In this article, the geometry of the slant submanifolds of a Riemannian product manifold is studied. Some necessary and sufficient conditions on slant, bi-slant and semi-slant submanifolds are given. We research fundamental properties of the distributions which are involved in definitions of semi- and bi-slant submanifolds in a Riemannian product manifold.

Slant Submanifolds of an Almost Hyperbolic Contact Metric Manifolds

In the present paper, we introduce the notion of slant submanifolds of an almost hyperbolic contact metric manifolds. We have obtained some results on slant submanifolds of an almost hyperbolic contact metric manifolds. We have given a necessary and sufficient condition for a slant submanifold of an almost hyperbolic contact metric manifolds.

Ricci Curvature of Certain Submanifolds in Kenmotsu Space Forms

In this paper, we obtain some sharp inequalities between the Ricci cur- vature and the squared mean curvature for bi-slant and semi-slant submanifolds in Kenmotsu space forms. Estimates of the scalar curvature and the k-Ricci curvature, in terms of the squared mean curvature, are also proved respectively.

Kaehler乘积流形中的半斜子流形

半斜子流形是全纯子流形和全实子流形的推广。主要讨论了Kaehler乘积流形中的乘积半斜子流形,并对其分类;再推广到一般的不变半斜子流形的情况,并对其分类。在研究上述情况时,还讨论了其中的特殊情况,并对其分类。

Bochner Kaehler流形中子流形的Casorati曲率不等式

利用一个新的代数不等式,对Bochner Kaehler流形中的子流形建立两个关于广义标准δ-Casorati曲率的不等式,并给出子流形的标准数量曲率与外在不变量Casorati曲率之间的关系.